Electromagnetic linear valve

ABSTRACT

An electromagnetic linear valve comprises a valve body, a movable element and an electromagnetic unit driving the movable element in the valve body and a spring leaf, wherein said valve body is divided into two valve chambers by a baffle where a through hole is formed to make the two valve chambers connected, and two valve chambers have an air inlet vent and an exhaust vent respectively, and the movable element has a valve plug blocking the through hole on the baffle, and the said valve body comprises a upper valve body and a lower valve body wherein said upper valve body and lower valve body are connected by ultrasonic welding. The upper valve body and the lower valve body of the present invention are connected by ultrasonic welding so that the connection is tight, stable, and the damage of other components caused by rotating a bolt in the assembling process is avoided.

FIELD OF THE INVENTION

The present invention relates to an electromagnetic linear valve that controls the switching of gas, more particularly to an electromagnetic linear valve with improved structure.

BACKGROUND OF THE INVENTION

The electromagnetic linear valve is widely used to control the switching of gas in the pipeline, and it mainly comprises a valve body, a movable element, an electromagnetic unit and a spring leaf. The valve body is divided into two valve chambers by a baffle having a through hole connecting the two valve chambers, and two valve chambers have an air inlet vent and an exhaust vent respectively, and the movable element has a valve plug blocking the through hole on the baffle; the electromagnetic unit works together with the spring leaf to move the movable element and the valve plug and to make the valve plug switch between plugging the said through hole and leaving the said through hole.

The main defects of the existing electromagnetic linear valve are: first of all, the two parts of the valve body are closured by bolts, being uneasy to assemble, and the movement of the bolts is easy to generate mismatch error or to damage related components; secondly, there is no support device for the coil of the electromagnetic unit so that it is not easy to coil up the coil and the structure is unstable; thirdly, the controller board of the electromagnetic unit is set beside the coil so that the volume of the valve body is big.

SUMMARY OF THE INVENTION

The object of the present invention is to offer an electromagnetic linear valve with improved structure which can overcome the defects of the prior art, such as the irrationality of the connection of the two valve parts, the irrationality of the assembly structure of the coil, and the irrationality of the position of the controller board.

The technical scheme is mentioned as follows:

An electromagnetic linear valve with improved structure comprises a valve body, a movable element, an electromagnetic unit driving the movable element in the valve body and a spring leaf, wherein said valve body is divided into two valve chambers by a baffle where a through hole is formed to make the two valve chambers connected, and two valve chambers have an air inlet vent and an exhaust vent respectively, and the movable element has a valve plug blocking the through hole on the baffle, and the said valve body comprises a upper valve body and a lower valve body, wherein said upper valve body and lower valve body are connected by ultrasonic welding.

The said electromagnetic linear valve with improved structure, wherein said upper valve body has concave pillars, and the through holes that match with the said concave pillars are set in the said lower valve body, the bottoms of the said concave pillars and of the through holes are merged by ultrasonic welding.

Each of the abutted surfaces belonging to the said upper valve body and to the said lower valve body has stair-stepping face interacting with each other.

The said electromagnetic linear valve with improved structure, wherein said electromagnetic unit comprises a coil, a controller board connecting with the coil, a iron core, a magnet and a steel casing, the said steel casing opens upward and its bottom surface is fix on the upward side of the bottom surface belonging to the said lower valve body, the said magnet is fix on the upward side of the bottom surface belonging to the said steel casing, the said iron core is fix on the upward side of the said magnet, the said valve plug facing to the through hole of the said baffle is fix to the top of the said movable element, the said spring leaf is connected between the said movable element and the said valve body; the said movable element has a corbelled trunk bulkhead enclosing the said movable iron core and the said coil enwinds the corbelled trunk bulkhead.

The said controller board is set on the bottom of the said steel casing, the said lower valve body has wire casing through which the connecting line between the said controller board and the said coil are set.

According to the description of the present invention, the beneficial effects from the technical scheme compared with the prior art are: firstly, the upper valve body and the lower valve of the present invention are connected by ultrasonic welding so that the connection is tight, stable and long working, and the damage of other components caused by rotating a bolt in the assembling process is avoided; secondly, the coil of the electromagnetic unit enwinds the corbelled trunk bulkhead so that it can coil up the coil around the corbelled trunk bulkhead instead of coiling up the coil in advance, so that the structure of the coil is more stable; thirdly, the controller board is set beneath the steel casing so that the integral structure of the electromagnetic linear valve is more compact and smaller.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows an exploded view according to the present invention.

FIG. 2 shows a sectional view according to the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

With the following description of the drawings, the specific embodiment of the present invention shall be further described in details.

In FIG. 1 and FIG. 2, the electromagnetic linear valve of the present embodiments comprises a valve body 1, a movable element 2, an electromagnetic unit 3 driving the movable element 2 in the valve body 1 and a spring leaf 4.

The said valve body 1 comprises a lower valve body 11 and a upper valve body 12, and each of the four corners of the upper valve body 12's bottom surface has a concave pillar 123 projecting downward, and each of the four corners of the lower valve body 11 has a through hole 110 interacting with the concave pillar 123; the bottoms of the concave pillars 123 and of the through holes 110 are merged by ultrasonic welding, and each of the abutted surface belonging to the upper valve body 12 and the lower valve body 11 has stair-stepping face interacting with each other for position fixing.

The valve body 1 is divided into a lower valve chamber 101 and an upper valve chamber 102 by a baffle 13 in the upper valve body 12. A through hole 130 is formed on the baffle 13 to make the lower valve chambers 101 and the upper valve chambers 102 connected, and two valve chambers have air inlet vent 121 and exhaust vent 122 respectively.

A frame 112 extends downward from the center of bounding rectangle belonging to the lower valve body 11, a fixing hole 113 is formed in the center of the bottom plate belonging to the frame 112, and the bottom plate has a projecting part 114 on one side of its center.

The said electromagnetic unit 3 comprises a coil 33, a controller board 330 connecting with the coil 33, an iron core 31, a magnet 32 and a steel casing 34. The controller board 330 is set on the bottom of the said steel casing 34, and the lower valve body 11 has a wire casing 111 through which the connecting line between the said controller board 330 and the coil 33 are set. The shape of the controller board 330 is hemicycle matching to the bottom surface of the steel casing 34, the controller board 330 has a groove 331 interacting with the projecting part 114 belonging to the bottom surface of the lower valve body 11 for position fixing.

The said steel casing 34 opens upward and its bottom surface is fixed to the frame 112 of the lower valve body 11. The magnet 32 is fix on the upward side of the bottom surface belonging to the said steel casing 34, the iron core 31 is fix on the upward side of the said magnet 32, the said valve plug 5 facing to the through hole 130 of the said baffle 13 is fix to the top of the movable element 2, the said spring leaf 4 is connected between the movable element 2 and the said valve body 1. The said movable element 2 has a corbelled trunk bulkhead 21 enclosing the iron core 31 and the said coil 33 enwinds the corbelled trunk bulkhead 21; the axis rod 22 that is at the lower end of the movable element 2 threads the iron core 31, the magnet 32 and then the fixing hole 113 of the frame 112 for position fixing; a positioning tube 115 extends upward from the fixing hole 113, of which the outer diameter is identical to the diameter of the fixing hole 341 belonging to the steel casing 34 and the inner diameter is identical to the diameter of the top of the axis rod 22.

The steel casing 34 is fixed to the frame 112 of the lower valve body 11 so that it has good heat dispersion.

The invention has been described with reference to the specific embodiment mentioned above; therefore it cannot limit the reference implementation of the invention. It is obvious to a person skilled in the art that structural modification and changes can be carried out without leaving the scope of the claims hereinafter and the description above.

INDUSTRIAL APPLICABILITY

The present invention discloses an electromagnetic linear valve with improved structure. Its upper valve body and lower valve body are connected by ultrasonic welding so that the connection is tight, stable and long working, and the damage of other components caused by rotating a bolt in the assembling process is avoided, reducing working hours and diminishing costs. 

1. An electromagnetic linear valve with improved structure comprises a valve body, a movable element, an electromagnetic unit which drives the movable element in the valve body and a spring leaf, wherein said valve body is divided into two valve chambers by a baffle where a through hole is formed to make the two valve chambers connected, and two valve chambers have an air inlet vent and an exhaust vent respectively, and the movable element has a valve plug blocking the through hole on the baffle, and the said valve body comprises a upper valve body and a lower valve body, wherein said upper valve body and lower valve body are connected by ultrasonic welding.
 2. The electromagnetic linear valve with improved structure according to claim 1, wherein said upper valve body has concave pillars, and the through holes that match with the said concave pillars are set in the said lower valve body, the bottom of the said concave pillars and of the through holes are merged by ultrasonic welding.
 3. The electromagnetic linear valve with improved structure according to claim 2, wherein each of the abutted surface belonging to the said upper valve body and the said lower valve body has stair-stepping face interacting with each other.
 4. The electromagnetic linear valve with improved structure according to claim 1, wherein said electromagnetic unit comprises a coil, a controller board connecting with the coil, a iron core, a magnet and a steel casing, the said steel casing opens upward and its bottom surface is fix on the upward side of the bottom surface belonging to the said lower valve body, the said magnet is fix on the upward side of the bottom surface belonging to the said steel casing, the said iron core is fix on the upward side of the said magnet, the said valve plug facing to the through hole of the said baffle is fix to the top of the said movable element, the said spring leaf is connected between the said movable element and the said valve body; the said movable element has a corbelled trunk bulkhead enclosing the said movable iron core and the said coil enwinds the corbelled trunk bulkhead.
 5. The electromagnetic linear valve with improved structure according to claim 4, wherein said controller board is set on the bottom of the said steel casing, the said lower valve body has wire casing through which the connecting line between the said controller board and the said coil are set.
 6. The electromagnetic linear valve with improved structure according to claim 1, wherein a frame extends downward from the center of bounding rectangle belonging to the said lower valve body, a fixing hole is formed in the center of the bottom plate belonging to the said frame, and the said bottom plate has a projecting part on one side of its center.
 7. The electromagnetic linear valve with improved structure according to claim 4, wherein said steel casing opens upward and its bottom surface is fixed to the frame of the said lower valve body.
 8. The electromagnetic linear valve with improved structure according to claim 4, wherein the shape of the said controller board is hemicycle matching to the bottom surface of the said steel casing; the said controller board has a groove interacting with the projecting part of the bottom surface belonging to the said lower valve body for position fixing.
 9. The electromagnetic linear valve with improved structure according to claim 4, wherein the axis rod that is at the lower end of the said movable element threads the iron core, the magnet and then the fixing hole of the frame for position fixing; a positioning tube extends upward from the fixing hole, of which the outer diameter is identical to the diameter of the fixing hole in the steel casing and the inner diameter is identical to the diameter of the end of the axis rod.
 10. The electromagnetic linear valve with improved structure according to claim 6, wherein said steel casing opens upward and its bottom surface is fixed to the frame of the said lower valve body.
 11. The electromagnetic linear valve with improved structure according to claim 6, wherein the shape of the said controller board is hemicycle matching to the bottom surface of the said steel casing; the said controller board has a groove interacting with the projecting part of the bottom surface belonging to the said lower valve body for position fixing.
 12. The electromagnetic linear valve with improved structure according to claim 6, wherein the axis rod that is at the lower end of the said movable element threads the iron core, the magnet and then the fixing hole of the frame for position fixing; a positioning tube extends upward from the fixing hole, of which the outer diameter is identical to the diameter of the fixing hole in the steel casing and the inner diameter is identical to the diameter of the end of the axis rod. 